Door-operated fly-chaser.



0. N. BUYER.

DOOR OPERATED FLY CHASER.

APPLICATION FILED JULY H.191].

Paterited Oct. 29, 1918.

M 0 I y M w 2mm ]%E@y@m OBIN 1\T. BOYER, OF LQS ANGELES, CALIFORNIA.

DOOR-OPERATED FLY-CHASER.

messes.

Specification of Letters Patent.

Patented Oct. 29, 1918.

Application filed July 19, 1917. Serial No. 181,630.

To all whom it may concern Be it known that I, ORIN N. BOYER, a citizen of the United States, residing at Los Angeles, in the county ofLos Angeles and State of California, have invented new and useful. Improvements in Door-Operated Fly- Chasers, of which the following is a specification.

This invention relates to a door and particularly pertains to a screen-door and a flychaser operated thereby.

lVhen a screen-door is opened, it is a common occurrence for the flies which are congregated around the opening to pass into the room. It is the principal object of this invention to provide automatically operated means for partially obstructing the opening at the top and side of the screen-door, and thereby preventing flies from passing into the room when the door is opened.

Another object of this invention is to pro vide a device of the above character which will be given a violent motion as the door is opened and will thereby frighten the flies and cause them to move away from the doorway.

It is a further object of this invention to provide a device of the above characterwhich is simple in construction and may be readily made to act in combination with screen-doors of ordinary construction and may thus be automatically opened and closed.

Other objects will appear hereinafter.

The invention is illustrated, by way of example, in the accompanying drawings in which:

Figure l is a view in elevation illustrating a screen-door and aset of fly-Chasers mounted in combination therewith.

Fig. 2 is a view in vertical section as seen on line 22 of Fig. 1, and discloses the relation of the fly-chasers to the door and the manner in which they operate. 7

Fig. 8 is a view in horizontal section as seen on line 33 of Fig. 1 and discloses the manner in which the movement of the screendoor will operate the fiy-chasers.

Referring more particularly to the drawings, 10 indicates a doorway which is normally closed by the door 11. This door is mounted upon hinges 12 and 13 and is adapted to swing horizontally therefrom. As shown in the drawings, the door is fitted with a screened. panel 14 of the common screen-door construction. A knob 15 is mounted upon the door and permits it to be readily swung upon its hinges. Pivotally and vertically mounted along the door-post 16 is a horizontally swinging fly-chaser 17, which is secured within bearings 18 and 19 at its opposite ends. This member is substantially rectangular in shape and is formed with a frame 20 having obliquely inclined ends. This frame supports a screen netting 21 and is oscillated by frictional engagement of a finger 22 with an actuating roller 23 secured to the trunnion at the lower end of the chasing member.

The trunnion at the upper end of the vertical chaser 17 is fitted with a beveled gear 2 1 which is in mesh with a gear 25 secured to the trunnion of a horizontally disposed chaser 26. The trunnions of this horizontal member are mounted within bearings 27 and 28 secured across the top of the door frame and hold the member so that it over-laps the joint between the door and the doorway. This horizontal member is formed with a frame 29 which is substantially rectangular in shape and has an inclined end adjacent the corner of the door, the opposite end being straight. The frame is fitted with a screen netting 30 similar to the netting used in the door and the member 17. i

In operation, the door normally stands closed and the chaser members are vertically alined to over-lap the joint along the top and partially along the side of the door. WVhen the handle 15 is grasped, the door may be swung outwardly in the direction of the arrow -a, as indicated in Fig. This will cause the resilient finger 22 to engage the side of the actuating roller 23 and rotate it in the direction of the arrow -Z Due to the fact that this roller is fixed to the trunnion of the member 17, the frame 20 will be swung upon its vertical axis and will, in turn, cause the beveled gear 24: to rotate.

As this gear is in mesh with the gear 25, the chasers 17 and 26 will both swing outwardly and permit the door to pass by them. This violent action of the chasers will frighten the flies and cause them to move from the doorway. Until the door is closed, the chasers will assume the position inclicated by dotted lines in .Fig. 1 and when the spring finger 22 again engages the periphery of the roller 23, the members will be swung toward the door and will assume their normal position.

It will thus be seen that the device here disclosed is simple in its operation and will effectively prevent flies and other insects from passing through the doorway when the door is opened.

While I have shown the preferred construction of my invention as now known to me, it will be understood that various changes in the combination, construction and arrangement of parts may be made by those skilled in the art without departing from the spirit of the invention.

I claim:

1. A fly-chaser, comprising a vertically extending and horizontally pivoted screen member secured upon a door frame and normally over-lapping the vertical edge of a door positioned within said frame, a gear formed at the upper end of said screen, another gear in mesh with said first-named gear, a horizontally disposed and vertically pivoted screen in connection with said second-named gear, a friction roller secured to the vertically extending screen, and a resilient finger mounted upon the door and adapted to engage the roller in a manner to simultaneously oscillate both of said screens.

2. A fly-chaser, comprising a vertically extending screen member adapted to be pivotally mounted along the side of adoor frame and to over-lap the edge of the door closing said frame; a friction roller secured to the vertically extending screen, and a resilient finger adapted to be mounted upon the door to engage the roller as the door opens or closes, so as to oscillate the screen.

3. A fly-chaser, comprising a vertically extending screen member adapted to be pivotally mounted along the side of a door frame and to over-lap the edge of the door closing said frame; a horizontally mounted screen member extending along the frame to overlap the upper edge of the door; means for neous operation; a friction roller secured to onemember and a: resilient finger adapted to be mounted upon a door to engage the friction roller and oscillate the screens.

In testimony whereof I have signed my name to this specification.

ORIN N. BOYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

connecting two screen members for simulta- Y 

